Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study The Toric Tourbillon exposes the

The Toric Tourbillon exposes the movement through an open-worked dial and sapphire caseback

The mechanism can be manually wound through the crown at twelve o'clock

in addition to a mesmerising guilloche pattern that curves around the dial from two different angles

while the balance cock featuring intricate hand-engraving

first devised in the last decade of the 20th century

Tourbillon Perpetual Calendar | 720.025F | Platinum for-the-study The Toric Tourbillon exposes theThis Tourbillon Perpetual Calendar* is a highly complicated time piece that marked the introduction of a tourbillon with an automatic movement into the A. Lange & Shne catalogue, and their first use of the instant jump calendar indication. Only 100 pieces were made in platinum. The watch marks a fascinating point in the history of modern Lange watches. This Tourbillon Perpetual Calendar reference 720. 025F was launched in 2012, introducing a number of